/*-
 * Copyright (c) 2003, 2004, 2007 Lev Walkin <vlm@lionet.info>.
 * All rights reserved.
 * Redistribution and modifications are permitted subject to BSD license.
 */
/*
 * Miscellaneous system-dependent types.
 */
#ifndef _ASN_SYSTEM_H_
#define _ASN_SYSTEM_H_

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>     /* For snprintf(3) */
#include <stdlib.h>    /* For *alloc(3) */
#include <string.h>    /* For memcpy(3) */
#include <sys/types.h> /* For size_t */
#include <limits.h>    /* For LONG_MAX */
#include <stdarg.h>    /* For va_start */
#include <stddef.h>    /* for offsetof and ptrdiff_t */

#ifdef WIN32

#include <malloc.h>
#define snprintf _snprintf
#define vsnprintf _vsnprintf

/* To avoid linking with ws2_32.lib, here's the definition of ntohl() */
#define sys_ntohl(l) ((((l) << 24) & 0xff000000) | (((l) << 16) & 0xff0000) | (((l) << 8) & 0xff00) | ((l)&0xff))

#ifdef _MSC_VER /* MSVS.Net */
#ifndef __cplusplus
#define inline __inline
#endif
#ifndef ASSUMESTDTYPES /* Standard types have been defined elsewhere */
#define ssize_t SSIZE_T
typedef char int8_t;
typedef short int16_t;
typedef int int32_t;
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned int uint32_t;
#endif /* ASSUMESTDTYPES */
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <float.h>
#define isnan _isnan
#define finite _finite
#define copysign _copysign
#define ilogb _logb
#else /* !_MSC_VER */
#include <stdint.h>
#endif /* _MSC_VER */

#else /* !WIN32 */

#if defined(__vxworks)
#include <types/vxTypes.h>
#else /* !defined(__vxworks) */

#include <inttypes.h> /* C99 specifies this file */
/*
 * 1. Earlier FreeBSD version didn't have <stdint.h>,
 * but <inttypes.h> was present.
 * 2. Sun Solaris requires <alloca.h> for alloca(3),
 * but does not have <stdint.h>.
 */
#if (!defined(__FreeBSD__) || !defined(_SYS_INTTYPES_H_))
#if defined(sun)
#include <alloca.h> /* For alloca(3) */
#include <ieeefp.h> /* for finite(3) */
#elif defined(__hpux)
#ifdef __GNUC__
#include <alloca.h> /* For alloca(3) */
#else               /* !__GNUC__ */
#define inline
#endif /* __GNUC__ */
#else
#include <stdint.h> /* SUSv2+ and C99 specify this file, for uintXX_t */
#endif              /* defined(sun) */
#endif

#include <netinet/in.h> /* for ntohl() */
#define sys_ntohl(foo) ntohl(foo)

#endif /* defined(__vxworks) */

#endif /* WIN32 */

#if __GNUC__ >= 3
#ifndef GCC_PRINTFLIKE
#define GCC_PRINTFLIKE(fmt, var) __attribute__((format(printf, fmt, var)))
#endif
#ifndef GCC_NOTUSED
#define GCC_NOTUSED __attribute__((unused))
#endif
#else
#ifndef GCC_PRINTFLIKE
#define GCC_PRINTFLIKE(fmt, var) /* nothing */
#endif
#ifndef GCC_NOTUSED
#define GCC_NOTUSED
#endif
#endif

/* Figure out if thread safety is requested */
#if !defined(ASN_THREAD_SAFE) && (defined(THREAD_SAFE) || defined(_REENTRANT))
#define ASN_THREAD_SAFE
#endif /* Thread safety */

#ifndef offsetof /* If not defined by <stddef.h> */
#define offsetof(s, m) ((ptrdiff_t) & (((s *)0)->m) - (ptrdiff_t)((s *)0))
#endif /* offsetof */

#ifndef MIN /* Suitable for comparing primitive types (integers) */
#if defined(__GNUC__)
#define MIN(a, b) ({ __typeof a _a = a; __typeof b _b = b;	\
	((_a)<(_b)?(_a):(_b)); })
#else                                     /* !__GNUC__ */
#define MIN(a, b) ((a) < (b) ? (a) : (b)) /* Unsafe variant */
#endif                                    /* __GNUC__ */
#endif                                    /* MIN */

#endif /* _ASN_SYSTEM_H_ */
